Flight number record

OO 6334

SkyWest Airlines · Phoenix to Durango

Route: PHX → DRO
Departs: 21:45
Flights: 258
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s OO 6334, check with SkyWest Airlines. SkyWest Airlines flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.

OO 6334 sits in the middle of the pack with a C+. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.3%. The late ones land close to two hours behind schedule. That rests on 258 flights, with a median arrival 3 minutes early.

On time

74.4%

Arrivals under 15 minutes late, of 258 completed flights

Avg delay

119 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.89%

1 hour+ late

11.6%

National rate is 8.3%

These figures cover 258 flights between September 2025 and August 2026. Beyond the headline rate, 11.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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Schedule

When OO 6334 flies

OO 6334 flies PHX to DRO without a single fixed slot. Its most common scheduled departure was 21:45, used on 74 of 258 flights, with 19:23 (36 flights) and 19:54 (30 flights) next.

Departs 21:4574 flights28.7%
Departs 19:2336 flights14.0%
Departs 19:5430 flights11.6%

Scale runs 0% to 100%.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 21:45 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and OO 6334 runs 4 points better at 74.4%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

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Against the route

OO 6334 next to PHX to DRO

Every carrier on PHX to DRO combined arrived on time 78.8% of the time across 987 flights, so OO 6334 is 4 points behind it. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 4 points.

OO 6334 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 6334thin sample	258	74.4%	119 min	0.00%	C+
All SkyWest Airlines on PHX–DRO	987	78.8%	89 min	0.41%	B+
All carriers on PHX–DRO	987	78.8%	89 min	0.41%	B+
SkyWest Airlines, whole network	855,406	78.7%	88 min	1.79%	B

Across the year

OO 6334 quarter by quarter

OO 6334 did not run the same all year. Its best quarter was Apr–Jun 2026 at 85.5% on time and its weakest Jan–Mar 2026 at 62.0%, a swing of 24 points on roughly 65 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Jul–Sep 202512 flights—
Oct–Dec 202554 flights75.9%
Jan–Mar 202671 flights62.0%
Apr–Jun 202683 flights85.5%
Jul–Sep 202638 flights71.1%

Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.

Arrival by arrival

How late OO 6334 runs when it is late

The 66 late arrivals split 16 under half an hour, 20 between 30 and 60 minutes, and 30 an hour or more.

15+ min early43 flights16.7%
Within 15 min149 flights57.8%
15–29 min late16 flights6.2%
30–59 min late20 flights7.8%
1–2 hours late19 flights7.4%
2+ hours late11 flights4.3%

Scale runs 0% to 100%.

Share of 258 completed flights by arrival against schedule.

9 of 65 late departures made up the time and arrived on time, 14% of them. 10 flights left on time and still arrived late.

The worst days

Worst days for OO 6334

The latest arrival of the period was on 13 March 2026, 17 hours 28 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. On four of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).

The latest arrivals of OO 6334 in the period
Date	Arrived late by	Largest filed cause
13 March 2026	17 hours 28 minutes	Late-arriving aircraft
14 March 2026	16 hours 42 minutes	Carrier
26 April 2026	13 hours 46 minutes	Carrier
3 July 2026	10 hours 10 minutes	Carrier
1 July 2026	9 hours 54 minutes	Carrier

Delay causes

Why OO 6334 runs late

Carrier accounts for 60% of the 7,841 delay minutes carriers reported here, and the remaining four split what is left.

Carrier
60%
Late-arriving aircraft
28%
National Airspace System
9%
Extreme weather
3%

The largest share of delay minutes, 60%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 4,667 of the 7,841 delay minutes reported here. The split is drawn from 7,841 delay minutes reported on OO 6334.

Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

11.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.

Every one of the 258 flights under OO 6334 in the data flew PHX to DRO. The number was not reused on any other city pair, which makes this a clean record of one route.

One caution: this is a thin sample. 258 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.

What to do with this

Booking OO 6334

For a booking, read OO 6334 as 74.4% on time with 0.00% cancelled over 258 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

A flight number here means SkyWest Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.

Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures